obama 53 to 45% and helped him carry this state. dean renoylds, cbs news, cleveland. >>> and in the bay area, some are taken to the streets in their last push targeting still undecided voters. the one thing that is forcing the ballot counters to work overnight. >> around our district there is probably about at least 8 to 9 corners like this. >> reporter: corners where the schoolteachers are waiting a last-minute battle to encourage voters to support proposition 30 as the state sales on the income tax hike that they say, they would stop more education cuts, targeting undecided voters. those making up their minds in the polling booth or who are waiting until the last possible minute to mail in their ball los -- ballots and plenty of them are. >> if you have not mailed them yet, you are getting risky about that ballot. >> reporter: he has talked to the civic groups, claiming they are still undecided. not about who to pick for president, but about what proposition to support. it shows. >> if you look at our tally equipment, you can see